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Effect of low temperature on the flammability limits of methane/nitrogen mixtures

Author

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  • Li, Zhenming
  • Gong, Maoqiong
  • Sun, Eryan
  • Wu, Jianfeng
  • Zhou, Yuan

Abstract

An experimental setup was established to measure the flammability limits of flammable gases at low temperatures. The flammability limits of methane/nitrogen mixtures in air were measured at atmospheric pressure and wide temperature range from 150 to 300 K. The estimated uncertainty of the experimental values was 0.2 vol%. The results reveal that as initial temperature decreases, the upper flammability limits (UFL) decrease while the lower flammability limits (LFL) increase. Therefore, the critical flammability ratio (CFR) decreases as the initial temperature decreases. In addition, the variation in the UFL is more sensitive than that in the LFL as the molar ratio of nitrogen to methane increases. In addition, an extended Le Chatelier’s formula with higher-order and temperature terms was proposed to correlate and predict the flammability limits at each temperature. The calculated values conformed to the experimental results for both the LFL and the UFL.

Suggested Citation

  • Li, Zhenming & Gong, Maoqiong & Sun, Eryan & Wu, Jianfeng & Zhou, Yuan, 2011. "Effect of low temperature on the flammability limits of methane/nitrogen mixtures," Energy, Elsevier, vol. 36(9), pages 5521-5524.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:9:p:5521-5524
    DOI: 10.1016/j.energy.2011.07.023
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    Citations

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    Cited by:

    1. Zheng, Shizhuo & Zhang, Xin & Wang, Tao & Liu, Jie, 2015. "An experimental study on premixed laminar and turbulent combustion of synthesized coalbed methane," Energy, Elsevier, vol. 92(P3), pages 355-364.
    2. Mendiburu, Andrés Z. & de Carvalho, João A. & Coronado, Christian R. & Roberts, Justo J., 2017. "Flammability limits temperature dependence of pure compounds in air at atmospheric pressure," Energy, Elsevier, vol. 118(C), pages 414-424.
    3. Wu, Xi & Yang, Zhao & Wang, Xiaoming & Lin, Yulong, 2013. "Experimental and theoretical study on the influence of temperature and humidity on the flammability limits of ethylene (R1150)," Energy, Elsevier, vol. 52(C), pages 185-191.
    4. Li, Ruikang & Luo, Zhenmin & Wang, Tao & Cheng, Fangming & Lin, Haifei & Zhu, Xiaochun, 2020. "Effect of initial temperature and H2 addition on explosion characteristics of H2-poor/CH4/air mixtures," Energy, Elsevier, vol. 213(C).
    5. Wang, Dan & Qian, Xinming & Ji, Tingchao & Jing, Qi & Zhang, Qi & Yuan, Mengqi, 2021. "Flammability limit and explosion energy of methane in enclosed pipeline under multi-phase conditions," Energy, Elsevier, vol. 217(C).
    6. Kumma, Nagarjuna & Kruthiventi, S.S Harish, 2024. "Current status of refrigerants used in domestic applications: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PB).
    7. Qi, Chang & Lv, Xianshu & Wang, Yalei & Wu, Chuandong & Chen, Lei & Yan, Xingqing & Yu, Jianliang, 2023. "Effects of ethylene addition and dilution on the explosion characteristics of ethane-ethylene mixtures," Energy, Elsevier, vol. 280(C).
    8. Yang, Zhao & Wu, Xi, 2013. "Retrofits and options for the alternatives to HCFC-22," Energy, Elsevier, vol. 59(C), pages 1-21.
    9. Tian, Hua & Liu, Yuewei & Shu, Gequn & Li, Linqing & Huo, Xu, 2019. "Theoretical and experimental research on the influence of initial temperature on the flammability of hydrocarbon-CO2 mixture using in organic Rankine cycle," Energy, Elsevier, vol. 167(C), pages 939-949.

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